Coating device



March -1, 1932. G. L. WEISER 1,847,737

COATING DEVICE Filed Oct. 21, 1929 2 Sheets-Sheet l Geo/y, C. Wez'ser March 1, 1932. G. WEISER 1,847,737

IIIIIIIIIII CE d Oct. 21, 1929 2 Sheets-Sheet 2 Patented Mar. 1, 1932 UNITED STATES PATENT OFFICE" GEORGE L. WEISER, OF ANDERSON, INDIANA, ASSIGNOIR- T DELGO-REMY CORPORA TION', OF-ANDERSON, INDIANA, A. CORPORATION OF DELAWARE l COATI G DEVICE Application filed October 21, 1929. Serial No. 401,805.

This invention relates to the manufacture of armatures for motor driven horns, and particularly to a device for preparing the leads of the armature conductors, which are located in slots of commutator segments, for soldering,

One of the objects of the invention is to facilitate the application of flux to portions of a work piece tobe soldered, and inciden- 1o tally to reduce the cost of manufacture of said work pieces. f

A further object is to provide means for applying a "coating composition to certain predetermined portions of a work piece.

In order to accomplish these and other objects of the invention, a receptacle is provided containing a supply of the coating composition, into which dipa plurality of rotary brushes which are caused to rotate when the work piece is brought into engagement therewith and rotated, the rotating brushes carrying portions of the coating composition to the engaged portions of the work piece, and smearing the same thereon.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferred embodiment of one form of the pres ent invention is clearly shown. 7

In the drawings:

Fig. 1 is a front view in perspective of my improved composition coating device.

Fig. 2 is a sectional view thereof, substantially as indicated by the line and arrows 2-2 of Fig. 1.

Fig. 3 is a lateral view in perspective of the device, showing work pieces in place to be operated upon.

Figs. 4 and 5 are detail views of rotary brushes used in the apparatus. 7

Fig. 6 is a sectional view of a modified form of brush support, similar to Fig. 2.

With particular reference to the drawings, the apparatus is embodied in a structure designed for the application of fluxing compound to certain restricted portions of work pieces, as the commutator segments 10 and armature leads 11 of'horn armature assemblies 1 2, preparatory to soldering the said leads to the commutator segments.

In the particular form illustrated, 15 indicates a vat or receptacle providing a container for the coating compound 16, which in the present instance may be a soldering flux, the vat 15 of course being constructed of some material relatively inactive with regard to the coating compound which it contains. Fixed to rotate so as to dip into the coating compound 16 there is provided one or more brushes 17, as by securing a pintel 18 in one wall of the vat"15,upon which pintel is rotatably supported a brush 17 The brush 17- is of the rotary type, and substantially disc like in form as exhibited in Figs. 4 and 5. It may however, be fash ioned in any preferred form to suit the req uisite dimensions of the work piece and it may be constructed of fiber, bristles, hair, rubber, etc., or other bristle likelmembers. In the present instance, where the brush is used in conjunction with soldering flux, it is found desirable to form the brush from one or more discs of'sheet rubber 19, whichhave been radially slit to form the bristle like or tooth members 22.1 This pile-of discs is $6- cured together by a flanged sleeve 23, to form a bearing in conjunction with the pintel 18. A retaining pin 24 in the end of the pintel 18 retains the brush in position thereon.

The vat 15 is mounted upon a base member 25 and is substantially enclosed by a hood or cover 30, formed to fit about the vat and provide a'guard or pent house 31, over each of the brushes 17. Portionsv of the hood which normally would be disposed over the adjacent portions or proximate points of the brushes, are cut away at 32 to give access to the'adjacent'portions of the rotary brushes. In alignment with each of these cut away portions, and the proximate points of the ad jacentbrushes, there is provided a pair of bearing members 35 and 36. The members 35' are mounted upon the top portion of the cover as illustrated in Figs. 1, 2 and 3, while the bearing members 36 conform to adjustable brackets secured to thebase 25 by the bolt and wing nut devices 37 as illustrated 00 in Figs. 1 and 3.

It will be observed from Figs. 1 and 3, that the brushes 17 are mounted in substantially planar alignment upon one wall of the Vat 15, so that portions thereof are in close relation to each other or may even be in engagement with one another, as indicated at 40 in ig. 1. The posit-ion of the brushes or the distance apart, defining the proximate points of their contiguity, may vary depending upon the size ofrthe work to which the device is to be adapted, but at all events it is designed that the position of the bearings 35 and 36, and the relative separation-or position of the brushes with respect to each other, and with respe'ctto the bearings 35 and 36 will be so determined as to accommodate the particular work pieces, so that the brushes 17 will come into engagement with predetermined portions only of the work pieces designed to be acted upon;

. When such work pieces, as the horn armatures 12 are placedin the bearings 35 and 36 so that the armature shaft 13 thereot is positioned in the bearings, the portion of the commutator segments 10 and the armature leads 11 will be in substantial alignmentwith the bristles 22 of the brushes '17. The arma turesof course liewithin the proximate regions .ot the adjacent brushes, and part of the commutator segments and leads thereof will he in engagement with one or the other of the engaged brushes, so-that when the work piece isin position it can be given a twirl, or rotated, as by the hand or other means. This causes the brushes to rotate so that they dip into and. out-of the coating compound 16', a portion thereof adhering to the bristles of thebrush andbeing transported thereby to the engaged work piece. where it is smeared over the predetermined portions to becoated. Thus, the work pieces are etiiciently coated with the coating compound, over a restricted and predetermined portion thereof, which facilitates the manufacture of these work pieces as can be readily seen. i

The work pieces so treated, when the coating composition is a soldering flux, can be successively removed from: the coatingapparatus. and the prepared end thereof dipped into the solder pot and then deposited on .a rock, or in a receptacle substantially as a single; operation, which makes for a substanti :11 reduction in cost of production, since less handling of the work piece is necessitated, and the aggregate number that may be pre= pared in. a given unit of time is increased in substantial numbers.

Fig.6 illustrates another form of mount ing the rotary brush, and includes a pivot pin orbolt 40 passing through the sleeve 23 of the brush, and secured to the cover member 30 by the nuts 41 and 42 acting'as locks or clamping members. By this construction, the brush assemblies are mounted on the head a or cover 30, and are readily removable therefrom, and from immersion in the coating compound by simply removing the cover.

While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of theclaim which follows.

What is claimed is as follows:

A device for coating predetermined portions of. cylindrical work pieces, comprising in combination, a receptacle for the coating composition, rotary disc like brushes supported to dip into said coating composition, and so positioned as to present their adjacent peripheral portions in close proximity to one another, a cover for said receptacle, and brushes with cut away portions exposing the proximate portions of said brushes, and a. plurality of bearings in alignment with each proximate portions of said brushes, one of said bearings being supported by said; cover, whereby said work pieces may be set in said bearings with thepredetermined portions thereof-engaging the proximate portions of said brushes, and the rotation of saidwork piece in said bearings causing thebrushes to rotate so. that the coating composition will be smeared upon predetermined portions of said work pieces. L

"In testimony whereof I hereto affix my signature. GEORGE L. WEISER. 

